3L 5-Neck heavy wall, round bottom flask lower reservoir for gas scrubber. Flask has a 60mm Duran Flange center neck, 2ea 45/50 outer joints, and 2ea 24/40 outer joints. Drain valve is a 0-14mm with Perfluoro o-rings. Valve is offset from the bottom of the flask to permit solids to settle and not clog valve or damage the fluid pump head. Connection on the outlet of the valve is 1/2 " Swagelok® glass tubing for use with CG-1975 compression fitting.